we need to protect their environment. we have a strict quarantine system to protect the integrity of the environment. forty years on, it's still a class-a nature reserve. it's our job to look after them. ...it's my job to look after it. ♪ ♪ >> pelley: the food and drug administration calls the abuse of prescription painkillers ael major public health challenge, and today the f.d.a. wrapped up a hearing on the drugs. including oxycodone, vicodin and percocet. dr. jon lapook reports that they do their job well, but they come with a big risk. >> my liver started shutting down, my kidneys were shuttingrted down, my thyroid levels through the roof. >> reporter: 28-year-old kimberly-- who asked that we not use her last name-- nearly died from narcotic painkillers prescribed after a car accident. at first she only needed one orar two pills a day for the pain. but eventually she became addicted to the high. >> my tolerance started growing and i started taking two at a time, three at a time. it grew to 15 at a time. >> reporte